Ceiling fan



FIG. 1 is a side elevational view of a ceiling fan showing my newdesign, the opposite sides being identical in appearance and thebroken-lines showing mounting hardware being for illustrative purposesonly and forming no part of the claimed design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof; and

FIG. 4 is a bottom perspective view thereof.

The ornamental design for a ceiling fan, as shown and described.